3 years ago

Which step is incorrect? Look at picture

Mathematics

2 answers:

asambeis [7]3 years ago

8 0

Answer: step 4 is incorrect

Step-by-step explanation:

postnew [5]3 years ago

4 0

Answer:

step 4 is incorrect.

there must be;

cos(π/2-x)cos(y)-sin(π/2-x)siny

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